Naming Chemical Compounds:
To name chemical compounds there is a general formula.
First, you apply the general formula which is QxRy to each compound. Q and R can be atoms, monatomic ions or polyatomic ions.
after you know the formula then you ask yourself, does Q=H? if it does then the compound is an acid.
If the answer is no then you have to ask yourself if the compound has more than two elements?
If the answer is no then the compound is a binary acid. (meaning it ends in ide)
Then, after you found out it was a binary you have to ask, is Q a metal. if the answer is no then the compound is binary molecular and it uses prefixes in the name.
if the answer to the question is Q a metal is yes then you have to ask is Q=Group A. if it is you have to name the ions. If it is not name the ions. use a roman numeral with the cation.
Going back to the question does the compound have more than two elements, if you answer yes then the compound contains a polyatomic ion. the name generally ends in ite or ate.
Then you have to ask yourself if Q=group A. if it does then you have to name the ions. if it does not then you still name the ions but use a roman numeral with the cation.
Example:
an example is CuSO4. Here, Cu=R=So4. Q deos not equal H. The compound does have more than two elements so it contains a polyatomic ion. Because of this you should expect that the name will end in ite or ate. The next question is does Q=Group A? the answer is no so you must name the ions and use a roman numeral to indentify the charge of the transition metal. the name is copper(II) sulfate.
Writing Chemical Formulas:
1. and -ide ending generally indicates a binary compound
2. and -ite or -ate ending means a polyatomic ion that includes oxygen is in the formula
3. prefixes in a name generally indicate that the compound is molecular
4. a roman numeral after the name of a cation shows the ionic charge of the cation.
Finding the name of a compound:
to find the name of a compound follow these steps.
does it contain prefixes? if yes it is a molecular compound. use prefixes to write the formula. if no then it is an ionic compound. identify the symbols.
if it is a roman numeral give charges for the cations. Balance charges by using the crisscross method. add parentheses for any multiple polyatomic ions.
if it is a polyatomic ion find its charges.
if it is in Group A of the elements find its charges.
To name chemical compounds there is a general formula.
- First, you apply the general formula which is QxRy to each compound. Q and R can be atoms, monatomic ions or polyatomic ions.
- after you know the formula then you ask yourself, does Q=H? if it does then the compound is an acid.
- If the answer is no then you have to ask yourself if the compound has more than two elements?
- If the answer is no then the compound is a binary acid. (meaning it ends in ide)
- Then, after you found out it was a binary you have to ask, is Q a metal. if the answer is no then the compound is binary molecular and it uses prefixes in the name.
- if the answer to the question is Q a metal is yes then you have to ask is Q=Group A. if it is you have to name the ions. If it is not name the ions. use a roman numeral with the cation.
- Going back to the question does the compound have more than two elements, if you answer yes then the compound contains a polyatomic ion. the name generally ends in ite or ate.
- Then you have to ask yourself if Q=group A. if it does then you have to name the ions. if it does not then you still name the ions but use a roman numeral with the cation.
Example:an example is CuSO4. Here, Cu=R=So4. Q deos not equal H. The compound does have more than two elements so it contains a polyatomic ion. Because of this you should expect that the name will end in ite or ate. The next question is does Q=Group A? the answer is no so you must name the ions and use a roman numeral to indentify the charge of the transition metal. the name is copper(II) sulfate.
Writing Chemical Formulas:
1. and -ide ending generally indicates a binary compound
2. and -ite or -ate ending means a polyatomic ion that includes oxygen is in the formula
3. prefixes in a name generally indicate that the compound is molecular
4. a roman numeral after the name of a cation shows the ionic charge of the cation.
Finding the name of a compound:
to find the name of a compound follow these steps.